Red Hat Security Advisory: freerdp security update
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox. Security Fix(es): * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22855) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22853) * freerdp: FreeRDP global-buffer-overflow (CVE-2026-22858) * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22859) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852) * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732) * freerdp: FreeRDP: Denial of Service via use after free in ecam_channel_write (CVE-2026-24678) * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676) * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491) * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948) * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684) * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681) * freerdp: FreeRDP has a Heap-buffer-overflow in audio_formats_free (CVE-2026-24682) * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683) * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679) * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675) * freerdp: FreeRDP: Arbitrary code execution via heap out-of-bounds write in RLE planar decode path (CVE-2026-26965) * freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in GDI surface pipeline (CVE-2026-26955) * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806) * FreeRDP: FreeRDP: Heap buffer overflow allows arbitrary code execution via crafted pixel data (CVE-2026-33984) * FreeRDP: FreeRDP: Denial of Service via specially crafted Remote Desktop Protocol messages (CVE-2026-33983) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
FreeRDP contains multiple memory corruption and use-after-free vulnerabilities (including CVE-2026-22852 and 22 others) that affect the xfreerdp client. These vulnerabilities include heap-buffer-overflows, global-buffer-overflows, heap-use-after-free, NULL pointer dereferences, and denial of service via crafted RDP messages or data. Several vulnerabilities enable arbitrary code execution through heap out-of-bounds writes or buffer overflows in various components such as the RLE planar decode path, GDI surface pipeline, and crafted pixel data. Red Hat has released security updates for Red Hat Enterprise Linux 10 and associated CodeReady Linux Builder products to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could lead to denial of service or arbitrary code execution on systems running vulnerable versions of FreeRDP. This could allow an attacker to execute code remotely via crafted RDP server messages or pixel data, potentially compromising the affected system. The advisory rates the security impact as Important (high severity).
Mitigation Recommendations
Red Hat has released security updates for Red Hat Enterprise Linux 10 and related products that address these vulnerabilities. Users should apply the provided updates as described in the Red Hat advisory RHSA-2026:19033 (https://access.redhat.com/errata/RHSA-2026:19033) to remediate these issues. Patch status is confirmed as fixed in these updates. No additional mitigation steps are indicated by the vendor advisory.
Red Hat Security Advisory: freerdp security update
Description
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox. Security Fix(es): * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22855) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22853) * freerdp: FreeRDP global-buffer-overflow (CVE-2026-22858) * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22859) * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852) * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732) * freerdp: FreeRDP: Denial of Service via use after free in ecam_channel_write (CVE-2026-24678) * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676) * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491) * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948) * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684) * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681) * freerdp: FreeRDP has a Heap-buffer-overflow in audio_formats_free (CVE-2026-24682) * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683) * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679) * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675) * freerdp: FreeRDP: Arbitrary code execution via heap out-of-bounds write in RLE planar decode path (CVE-2026-26965) * freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in GDI surface pipeline (CVE-2026-26955) * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806) * FreeRDP: FreeRDP: Heap buffer overflow allows arbitrary code execution via crafted pixel data (CVE-2026-33984) * FreeRDP: FreeRDP: Denial of Service via specially crafted Remote Desktop Protocol messages (CVE-2026-33983) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FreeRDP contains multiple memory corruption and use-after-free vulnerabilities (including CVE-2026-22852 and 22 others) that affect the xfreerdp client. These vulnerabilities include heap-buffer-overflows, global-buffer-overflows, heap-use-after-free, NULL pointer dereferences, and denial of service via crafted RDP messages or data. Several vulnerabilities enable arbitrary code execution through heap out-of-bounds writes or buffer overflows in various components such as the RLE planar decode path, GDI surface pipeline, and crafted pixel data. Red Hat has released security updates for Red Hat Enterprise Linux 10 and associated CodeReady Linux Builder products to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities could lead to denial of service or arbitrary code execution on systems running vulnerable versions of FreeRDP. This could allow an attacker to execute code remotely via crafted RDP server messages or pixel data, potentially compromising the affected system. The advisory rates the security impact as Important (high severity).
Mitigation Recommendations
Red Hat has released security updates for Red Hat Enterprise Linux 10 and related products that address these vulnerabilities. Users should apply the provided updates as described in the Red Hat advisory RHSA-2026:19033 (https://access.redhat.com/errata/RHSA-2026:19033) to remediate these issues. Patch status is confirmed as fixed in these updates. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19033
- Cve Count
- 23
- Additional Cves
- ["CVE-2026-22853","CVE-2026-22854","CVE-2026-22855","CVE-2026-22856","CVE-2026-22858","CVE-2026-22859","CVE-2026-23732","CVE-2026-23948","CVE-2026-24491","CVE-2026-24675","CVE-2026-24676","CVE-2026-24678","CVE-2026-24679","CVE-2026-24681","CVE-2026-24682","CVE-2026-24683","CVE-2026-24684","CVE-2026-26955","CVE-2026-26965","CVE-2026-31806","CVE-2026-33983","CVE-2026-33984"]
- Cvss Version
- null
Threat ID: 6a27e9928dd33fbd8516959c
Added to database: 6/9/2026, 10:23:14 AM
Last enriched: 6/9/2026, 10:33:33 AM
Last updated: 6/10/2026, 5:12:27 AM
Views: 3
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